Equation 3 · Part 2 · How Chemical Dynamics and Catalysis Actually Work
Symbol xi_i
What this part means
x is an input to the expression that computes the quantity on the left.
Its job in the formula
x is an input to the expression that computes the quantity on the left.
Full expression→Symbol xi_i→Article meaning
The passage around this formula
…with no vocabulary that presumes anything about the catalyst’s intent: fractional selectivity for a given product is the extent-of-reaction rate toward that product divided by the sum of rates toward all products, = / , and relative selectivity between two products is simply the ratio of their two rates [ 2 ] . Selectivity is therefore a kinetic competition among simultaneous pathways, decided by which transition state a given surface site makes cheapest, not a property the catalyst…
Learn the underlying idea
A subscript is a label attached below a symbol. It often selects a time step, component, category, or member of a sequence.
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Sources cited in the surrounding passage
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